Current ensemble forecasts from the China Meteorological Administration, ECMWF, and GFS models place Shanghai’s May 16 peak temperature at 26°C beneath a persistent subtropical high-pressure ridge, with light easterly winds limiting advection of warmer air and relative humidity near 60–70% moderating daytime heating. This synoptic pattern aligns with climatological norms for mid-May, when average highs hover around 25–26°C, producing near-certainty in trader pricing. Final resolution hinges on the official reading at Shanghai Pudong International Airport; any unexpected clearing of residual cloud cover or a late wind shift could briefly allow 27°C, though model guidance shows minimal spread around the 26°C solution.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Shanghai on May 16?
26°C 100.0%
21°C or below <1%
22°C <1%
23°C <1%
$171,825 Vol.
$171,825 Vol.
21°C or below
No
22°C
No
23°C
No
24°C
No
25°C
No
26°C
Yes
27°C
No
28°C
No
29°C
No
30°C
No
31°C or higher
No
26°C 100.0%
21°C or below <1%
22°C <1%
23°C <1%
$171,825 Vol.
$171,825 Vol.
21°C or below
No
22°C
No
23°C
No
24°C
No
25°C
No
26°C
Yes
27°C
No
28°C
No
29°C
No
30°C
No
31°C or higher
No
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Shanghai Pudong International Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/cn/shanghai/ZSPD.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve to "Yes" until all data for this date has been finalized.
The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
Market Opened: May 14, 2026, 12:08 AM ET
Resolution Source
https://www.wunderground.com/history/daily/cn/shanghai/ZSPDResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Shanghai Pudong International Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/cn/shanghai/ZSPD.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve to "Yes" until all data for this date has been finalized.
The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
Resolution Source
https://www.wunderground.com/history/daily/cn/shanghai/ZSPDResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Current ensemble forecasts from the China Meteorological Administration, ECMWF, and GFS models place Shanghai’s May 16 peak temperature at 26°C beneath a persistent subtropical high-pressure ridge, with light easterly winds limiting advection of warmer air and relative humidity near 60–70% moderating daytime heating. This synoptic pattern aligns with climatological norms for mid-May, when average highs hover around 25–26°C, producing near-certainty in trader pricing. Final resolution hinges on the official reading at Shanghai Pudong International Airport; any unexpected clearing of residual cloud cover or a late wind shift could briefly allow 27°C, though model guidance shows minimal spread around the 26°C solution.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
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